Lubricator



Patented Sept. 16, 1941 LUBRICATOR Martin F. Braden, Montreal, Quebec, Canada Application September 26, 1938, Serial No. 231,738 In Canada September 28, 1937 3 Claims.

This invention relates to oil lubricators and particularly to those of the force feed type.

The object of the invention is to provide a novel form of lubricator mechanism adapted to operate one or more pumps at a very accurately controlled rate, in which the drive mechanism is self lubricating.

A further object is to provide a simple drive mechanism in which the movement required to rotate the shaft is slight.

A further object is to provide a pump stroke control of novel and simple construction whereby very accurate adjustment can be made from outside the device.

Further objects will be set forth hereinafter.

Reference is made to the accompanying drawing in which:

Figure 1 is a vertical cross section through the axis of the drive shaft.

Figure 2 is a vertical cross section on the line 2-2 of Figure 1.

Figure 3 is a vertical cross section on the line 3-3 of Figure l.

The device as shown in Fig. 1 comprises two oil chambers secured together.

Chamber I is shown in Figures 1 and 3.

Chamber 2 is shown in Figures 1 and 2.

In chamber I bearings I journal the shaft 3 which extends into the chamber 2 and is there rotated in steps by mechanism to be described hereinafter.

Mounted in chamber I is a vertical plunger pump 4 with a ball inlet valve 4| adjacent the bottom of the chamber I. Integral with the cylinder 40 of the pump 4 is an inclined tube 42 from a ball outlet valve 43 which terminates in an outlet |I in the said wall of the chamber I.

The chamber I has an inlet I2 in its top wall through which the oil is fed and has a stopper I9. The plunger 44 of the pump 4 at its upper end has an eye 45 by means of which it is pivoted to a rocking forked lever 46. Integral with the cylinder 4|l and extending from the wall of chamber I is a spring cup I3. A coil spring I4 seated in the cup I3 bears upwardly on the lever 46. On the shaft 3 is mounted an eccentric cam 30 which rotates in the fork of the lever 46. Journalled in bearings I8 in the opposite side walls of the chamber I at right angles to the shaft 3 is a screw threaded bar I5 which meshes with the internally threaded bore of a fulcrum block I6. The block I6 has a rocking surface I1 which bears on the top surface of the lever rocking surface |I of the block I6 can be varied and adjusted to provide Very minute variations in the stroke of the pump 4 and therefore its output.

The drive mechanism comprises a stationary piston 20 mounted on the bottom 0f the chamber 2 through which a steam passage 2| runs.

' The cylinder 22 which extends upwards to a yoke 4B. By rotating the bar I5 the position of the 55 23 andan extension 24 which travels in a chamber 25 in the top of chamber 2. The yoke 2-3 has lateral extensions 26 on which are mounted coil springs 2l which bear on the top of the chamber I and force the cylinder 22 and its extensions normally downwards.

The end 3| of the shaft 3 isA journalled about a pin 50 from a plate 5 bolted to the wall of chamber 2 and carries reversed sets of one way clutches 32 and 33. The plate 5 has a clutch ring 5I which bears on the outer set 32 of clutches. The inner set 33 of clutches bears on a ring 6U extending from a cam 6 journalled on the shaft 3 and travelling in the yoke 23. The extension 24, cam 6 and shaft 3 have a passage 35 bored through them to feed oil from the chamber 25 to bearing 36.

Extending upwards from the bottom of the chamber 2 and parallel with the piston 2D is a pump cylinder I in which a plunger 'I0 secured to one of the extensions 26 reciprocates with the cylinder 22. At the lower end of the cylinder l is an inlet valve II from the chamber 2, and an outlet valve 12 to a passage 29 which runs up the wall of the chamber 2, to the chamber 25. 'Ihis pump provides lubrication to the drive mechanism. The chamber 25 has a removable cover 28 through which oil may be fed to the chamber 2.

With a construction as above set forth, the operation of the lubricator is as follows:

The chamber I is charged with oil through the inlet I2 and the chamber 2, through the chamber 25.

Steam in intermittent impulses is fed through the passage 2| to the cylinder 22, forces the cylinder 22 and yoke 23, upwards against the pressure of the springs 21. The yoke 23 oscillates the cam 6, and its ring El) through the clutch 33 rotates the end 3| of the shaft 3 a step. The clutch 32 over-running the ring 5I. When the steam pressure `drops the springs 21 force the yoke 23 and cylinder 22 downwards while the clutch 32 holds the ends 3| of the shaft 3 from reverse rotation, the clutch 33 over-running.

By means of the frequent oscillation of the cam 6, the shaft 3 is rotated by rapid steps. As the yoke 23 reciprocates it operates the plunger 'l0 and pumps oil to the chamber 25.

By the rotation of the shaft 3 the cam 3E) oscillates the fork of the bar 13S.

By the adjustment of the position of the fulcrum block IB the stroke of the plunger 44 can be varied.

The spring I4 maintains the bar 46 in contact with the rocking surface I1 of the fulcrum block I 5.

On the up stroke of the plunger 44 oil is sucked in through the valve 4l and on the down stroke the cil is forced through the valve 43 to the outlet Il.

In the above described mechanism I lhave set forth one means of reciprocating the yoke 23 by the movements of the cylinder 22. that other means may be substituted-for this purpose.

I have alsoy shown only a single oil chamberV with tWopumps. By the insertion of a partition in chamber f each pump may operate in its own chamber and different lubricants may be 'fed at varied speeds owing to the independent adjustmen-t.

What I claim is:

1. In a force feed lubricator the combination of a drive mechanism comprising a stationary piston, a steam passage therethrough, a reciprof eating cylinder having a yoke,` a shaft having a one Way clutch, a 'cam journalled on the shaft and having a ciu-tch ring and oscillatecl by the yoke and adapted to rotate the shaft, a 'reverse one Way clutch mounted on the shaft and having a stationary clutch ring therefor andan oil cham- It is obvious `stationary clutch ring therefor extending from the Wall of the drive mechanism chamber, one or more plunger pumps operated by the shaft in the oil chamber and means to vary the output of the pumps.

3. In a force feed lubricator, a drive mechanism'chamber, an oil chamber, a shaft journalled in the chambers, a drive mechanism comprising ing mechanism.

a stationary piston, a steam feed therethrough, a reciprocating cylinder having a yoke, springs bearing on the yoke, a one Way clutch 0n the shaft, a; cam journalled on the shaft and having a clutch ring and oscillated by the yoke, a reverse one way clutch mounted on the shaft a stationary clutch ring therefor extending from the Wall of the drive mechanism chamber, a lubricating pump in the drive chamber, having la piston secured to the yoke, an inlet valve from the bottom of the drive chamber, an outlet valve to a passage leading to a chamber at the top of the drive chamber, a passage from this` chamber to the-rotating mechanism adapted to lubricate thefrotat- MARTIN F'. BRODEN. 

